<template>
  <div>
    <div ref="my_first_echarts" style="width: 1000px; height: 400px;background:#fff;padding:20px;margin-top:20px;"></div>
    <img :src="imgUrl" alt="">
  </div>
</template>

<script>
import {getEchartsData,getImgCode} from "../../api"
export default {
  name: "reports",
  created() {
    getImgCode().then(res => {
      let url = "data:image/png;base64," + window.btoa(
        new Uint8Array(res).reduce(
          (data,byte) => {
           return  data + String.fromCharCode(byte)
          },''
        )
      )
      this.imgUrl = url
    })
  },
  mounted() {
    // 将页面的一个盒子作为echarts的容器进行渲染，初始化一个echarts空间
    let myEcharts = this.$echarts.init(this.$refs.my_first_echarts);
    // 将所有设置好的配置项加入到echarts中进行渲染  
    getEchartsData().then(res => {
      console.log(res)
      this.myOption = {...this.option,...res.data}
      console.log(this.option)
      myEcharts.setOption(this.myOption);
    })
    
 
  },
  data() {
    return {
      option: {
        title: {
          text: "用户来源",
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            label: {
              backgroundColor: "#6a7985",
            },
          },
        },
        legend: {
          data: ["Email", "Union Ads", "Video Ads", "Direct", "Search Engine"],
        },
        toolbox: {
          feature: {
            saveAsImage: {},
          },
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true,
        },
        xAxis: [
          {
            type: "category",
            boundaryGap: false,
            data: ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"],
          },
        ],
        yAxis: [
          {
            type: "value",
          },
        ],
        series: [
          {
            name: "Email",
            type: "line",
            stack: "Total",
            areaStyle: {},
            emphasis: {
              focus: "series",
            },
            data: [120, 132, 101, 134, 90, 230, 210],
          },
          {
            name: "Union Ads",
            type: "line",
            stack: "Total",
            areaStyle: {},
            emphasis: {
              focus: "series",
            },
            data: [220, 182, 191, 234, 290, 330, 310],
          },
          {
            name: "Video Ads",
            type: "line",
            stack: "Total",
            areaStyle: {},
            emphasis: {
              focus: "series",
            },
            data: [150, 232, 201, 154, 190, 330, 410],
          },
          {
            name: "Direct",
            type: "line",
            stack: "Total",
            areaStyle: {},
            emphasis: {
              focus: "series",
            },
            data: [320, 332, 301, 334, 390, 330, 320],
          },
          {
            name: "Search Engine",
            type: "line",
            stack: "Total",
            label: {
              show: true,
              position: "top",
            },
            areaStyle: {},
            emphasis: {
              focus: "series",
            },
            data: [820, 932, 901, 934, 1290, 1330, 1320],
          },
        ],
      },
      myOption:{},
      imgUrl:""
    };
  },
};
</script>

<style>
</style>